1、定义图书类,图书包含图书名称和价格两条属-|||-性。定义测试类,创建五个图书对象,按价格降序-|||-把这些图书的名称和价格打印在控制台

Java代码如下：

public class Book {
    private String name;
    private double price;

    public Book(String name, double price) {
        this.name = name;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public double getPrice() {
        return price;
    }
}

public class TestBook {
    public static void main(String[] args) {
        Book[] books = {
            new Book("Java编程思想", 99.9),
            new Book("Effective Java", 89.0),
            new Book("深入浅出设计模式", 69.8),
            new Book("计算机网络", 109.5),
            new Book("算法导论", 129.0)
        };

        Arrays.sort(books, (a, b) -> Double.compare(b.getPrice(), a.getPrice()));

        for (Book book : books) {
            System.out.println(book.getName() + ": " + book.getPrice());
        }
    }
}

输出结果为：

算法导论: 129.0
计算机网络: 109.5
Java编程思想: 99.9
Effective Java: 89.0
深入浅出设计模式: 69.8